14 添加影像图层
上一篇文章中我们介绍了如何向地图添加切片图层，这篇文章介绍如何添加影像图层。如果要实现此功能，同样的，我们需要“esri/layers/ArcGISImageServiceLayer”组件，通过实例化一个地图，然后实例化一个影像图层，再用map的addLayer方法将它添加到地图之上，效果如下：
具体操作如下所示：
1 实例化地图：
map = new Map("map", {
basemap: "osm",
center: [89.689085,39.09635],
zoom: 6
});
2 实例化影像图层并添加至地图之上：
var imageServiceLayer = new ArcGISImageServiceLayer(" https://xqwserver.arcgis.cn:6443/arcgis/rest/services/imageservertest/ImageServer", {
opacity: 0.75
});
map.addLayer(imageServiceLayer);
3 至此，我们实现了将一个影像图层添加在地图之上，此处只是一个简单的演示，关于具体的需求，大家可以查看此API的文档来进行进一步的操作。完整代码如下：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Simple Image Service</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.25/esri/css/esri.css" />
<style>
html, body, #map { height: 100%; width: 100%; margin: 0; padding: 0; }
</style>
<script src="https://js.arcgis.com/3.25/"></script>
<script>
var map;
require([
"esri/map", "esri/layers/ArcGISImageServiceLayer",
"dojo/parser", "dojo/domReady!"
], function(
Map, ArcGISImageServiceLayer,
parser
) {
parser.parse();
map = new Map("map", {
basemap: "osm",
center: [89.689085,39.09635],
zoom: 6
});
var imageServiceLayer = new ArcGISImageServiceLayer(" https://xqwserver.arcgis.cn:6443/arcgis/rest/services/imageservertest/ImageServer", {
opacity: 0.75
});
map.addLayer(imageServiceLayer);
});
</script>
</head>
<body>
<div id="map"> </div>
</body>
</html>
转载自：https://blog.csdn.net/qq_35117024/article/details/82864075
